WO1999019893A1 - Ecran tactile haute resistance et procede de fabrication - Google Patents

Ecran tactile haute resistance et procede de fabrication Download PDF

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Publication number
WO1999019893A1
WO1999019893A1 PCT/JP1998/004558 JP9804558W WO9919893A1 WO 1999019893 A1 WO1999019893 A1 WO 1999019893A1 JP 9804558 W JP9804558 W JP 9804558W WO 9919893 A1 WO9919893 A1 WO 9919893A1
Authority
WO
WIPO (PCT)
Prior art keywords
electrode sheet
electrodes
upper electrode
touch panel
glass substrate
Prior art date
Application number
PCT/JP1998/004558
Other languages
English (en)
Japanese (ja)
Inventor
Takao Hashimoto
Yasuji Kusuda
Original Assignee
Nissha Printing Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissha Printing Co., Ltd. filed Critical Nissha Printing Co., Ltd.
Priority to US09/529,060 priority Critical patent/US6380497B1/en
Priority to KR10-2000-7003761A priority patent/KR100519465B1/ko
Priority to EP98947797A priority patent/EP1030333B1/fr
Priority to DE69833957T priority patent/DE69833957T8/de
Publication of WO1999019893A1 publication Critical patent/WO1999019893A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/045—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2201/00—Contacts
    • H01H2201/018—Contacts transparent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/008—Adhesive means; Conductive adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2207/00—Connections
    • H01H2207/01—Connections from bottom to top layer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/014—Layers composed of different layers; Lubricant in between
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2209/00—Layers
    • H01H2209/024—Properties of the substrate
    • H01H2209/038—Properties of the substrate transparent
    • H01H2209/04—Glass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/002—Legends replaceable; adaptable
    • H01H2219/01—Liquid crystal
    • H01H2219/012—Liquid crystal programmable
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/02—Laser
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/022—Modular assembly
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2229/00—Manufacturing
    • H01H2229/024—Packing between substrate and membrane
    • H01H2229/028—Adhesive
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/004—CRT
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making

Definitions

  • the present invention relates to a high-intensity touch panel which is arranged on a screen such as an LCD (Liquid Crystal Display) or a CRT (CRT), and the position of which is input by pressing from above with a finger or the like in accordance with instructions of a see-through screen. It concerns the manufacturing method.
  • a screen such as an LCD (Liquid Crystal Display) or a CRT (CRT)
  • LCD Liquid Crystal Display
  • CRT CRT
  • an upper electrode sheet having electrodes on one surface of a flexible transparent film and a hard coat layer on the other surface, and a lower electrode sheet having electrodes on one surface of a glass substrate have a gap between the electrodes.
  • a touch panel of a resistive film type which is opposed to each other via a spacer and whose peripheral edge is bonded with an adhesive sheet.
  • a large upper electrode sheet and a lower electrode sheet, each having a large number of electrodes, are manufactured and attached to each other, and then cut using a cutter such as a metal blade from the upper electrode sheet side.
  • the upper electrode sheet is cut for each electrode by inserting a groove, while a groove is formed for each electrode in the glass substrate of the lower electrode sheet by making a cut from the lower electrode sheet side using a force cutter.
  • a method of obtaining individual touch panels by dividing the glass substrate along a groove of the glass substrate later is adopted.
  • the touch panel has been mounted on the display of a portable information terminal, and despite the problem of the glass strength of the touch panel in the event of an impact such as a drop, the conventional method has been used. It is pointed out that the obtained touch panel has insufficient glass strength.
  • the upper electrode sheet of the prior art has a hard coat layer on the uppermost layer in order to improve the sliding characteristics of the input surface and to prevent damage.
  • the hard coat layer was peeled off on both sides of the cutting line of the upper electrode sheet.
  • the cut line of the upper electrode sheet and the groove provided on the glass substrate of the lower electrode sheet are formed. Alignment is important. However, since the width of the cutting line and groove with a cutter such as a metal blade was less than 0.1 mm, it was difficult to align the two.
  • an object of the present invention is to solve the above-mentioned problems, and has excellent glass strength and adhesiveness of a hard coat layer, and is provided on a cutting line of an upper electrode sheet and a glass substrate of a lower electrode sheet in a manufacturing process.
  • the present invention is configured as follows to achieve the above object.
  • an upper electrode sheet having an upper electrode on one surface of a flexible transparent film and a hard coat layer on the other surface, and a lower electrode facing the upper electrode on one surface of a glass substrate
  • a lower electrode sheet facing the lower electrode facing the upper electrode with a space between the upper electrode and the lower electrode facing the upper electrode, wherein a lower electrode sheet is disposed between the upper electrode and the lower electrode facing the upper electrode;
  • a resistive touch panel the periphery of which is bonded with an adhesive layer
  • an upper electrode sheet having a plurality of upper electrodes on one surface of a flexible transparent film and a hard coat layer on the other surface, and a plurality of upper electrodes on one surface of a glass substrate, respectively.
  • a lower electrode sheet having a plurality of lower electrodes facing each other, the lower electrode sheet being opposed to each of the upper electrodes and the lower electrode facing each of the upper electrodes at a distance via a spacer, and
  • the periphery of an electrode and a lower electrode facing each of the upper electrodes is bonded with an adhesive layer and divided into individual touch panels.
  • the upper electrode sheet is irradiated with a laser beam from the upper electrode sheet side to cut the upper electrode sheet for each of the upper electrodes, while the lower electrode sheet side is cut using a force cutter to thereby cut the glass of the lower electrode sheet.
  • a first groove is provided on the substrate for each of the lower electrodes,
  • the upper electrode sheet is cut for each of the upper electrodes by irradiating the laser beam from the upper electrode sheet side, the lower electrode sheet below the upper electrode sheet is A second groove is also provided by irradiating the laser beam to the glass substrate for each of the lower electrodes,
  • a second mode of obtaining the individual touch panel by dividing along both the first groove and the second groove on both surfaces of the glass substrate It is intended to provide a method of manufacturing the high-strength touch panel of the resistive film type described above.
  • an upper electrode sheet having a plurality of upper electrodes on one surface of a flexible transparent film and a hard coat layer on the other surface;
  • a lower electrode sheet having a plurality of lower electrodes opposed to the plurality of upper electrodes on one surface is provided between the upper electrodes and the lower electrodes opposed to the upper electrodes via a spacer.
  • the upper electrode and the lower electrode opposed to the upper electrode are bonded to each other with an adhesive layer, and are divided into individual touch panels.
  • the upper electrode sheet is cut for each of the upper electrodes by irradiating a laser beam from the upper electrode sheet side, and a groove is provided for each of the lower electrodes in the glass substrate of the lower electrode sheet below the upper electrode sheet,
  • an upper electrode sheet having a plurality of upper electrodes on one surface of a flexible transparent film and a hard coat layer on the other surface; and a plurality of upper electrodes on one surface of a glass substrate, respectively.
  • a lower electrode sheet having a plurality of lower electrodes facing each other, the lower electrode sheet being opposed to each of the upper electrodes and the lower electrode facing each of the upper electrodes at a distance via a spacer, and
  • a method of manufacturing a touch panel of a resistive film type in which an electrode and a periphery of a lower electrode opposed to each of the upper electrodes are bonded with an adhesive layer and divided into individual touch panels.
  • the upper electrode sheet is cut for each of the upper electrodes, and the lower electrode sheet thereunder is also cut for each of the lower electrodes, so that individual Provided is a method for manufacturing a high-strength touch panel of a resistive film type for obtaining a touch panel.
  • the transparent film and the hard coat layer are fused at a side end to form a fused portion, and are adjacent to the fused portion.
  • the surface layer on the side edge of the glass substrate becomes a compressive stress layer.
  • FIG. 1 is a schematic view illustrating a manufacturing process of a high-strength touch panel according to a first embodiment of the present invention.
  • FIG. 2 is a schematic view illustrating a manufacturing process of the high-strength touch panel according to the embodiment of the present invention
  • FIG. 3 is a partial cross-sectional view showing a cutting line of an upper electrode sheet formed by irradiation with a laser beam in the method for manufacturing a high-strength touch panel according to the embodiment of the present invention.
  • FIG. 4 is a schematic view showing a manufacturing process of the high-strength touch panel according to the embodiment of the present invention
  • FIG. 5 is a partial cross-sectional view showing a groove of a lower electrode sheet formed by cutting using a cutter in the method for manufacturing a high-strength touch panel according to the embodiment of the present invention
  • FIG. 6 is a schematic view showing a manufacturing process of the high-strength touch panel according to the embodiment of the present invention.
  • FIG. 7 is a schematic diagram showing a manufacturing process of the high-strength touch panel according to the embodiment of the present invention.
  • FIG. 8 is a schematic view showing the high-strength touch panel according to the embodiment of the present invention.
  • FIG. 9 is a partial cross-sectional view showing a groove of a lower electrode sheet formed by irradiation with a laser beam in a method of manufacturing a high-strength touch panel according to another embodiment of the present invention.
  • FIG. 10 shows a method for manufacturing a high-strength touch panel according to still another embodiment of the present invention.
  • FIG. 6 is a partial cross-sectional view showing grooves of a lower electrode sheet formed by irradiation of a laser beam in the method,
  • FIG. 11 is a partial cross-sectional view showing a cutting line of a lower electrode sheet formed by irradiation with one laser beam in a method of manufacturing a high-strength touch panel according to still another embodiment of the present invention.
  • FIGS. 1, 2, 4, 6, and 7 are schematic views illustrating a manufacturing process of a high-strength touch panel according to an embodiment of the present invention
  • FIG. 3 is a high-strength touch panel according to the embodiment of the present invention
  • FIG. 5 is a partial cross-sectional view showing a cutting line of the upper electrode sheet 1 formed by the irradiation of the laser beam 4 in the method of manufacturing the touch panel.
  • FIG. 5 shows the use of the force cutter 6 in the method of manufacturing the high-strength touch panel according to the embodiment of the present invention.
  • FIG. 8 is a partial cross-sectional view showing the groove 7 of the lower electrode sheet 2 formed by the cut, FIG.
  • FIG. 8 is a schematic view showing the high-strength touch panel according to the embodiment of the present invention
  • FIG. 9 and FIG. FIG. 7 is a partial cross-sectional view showing a groove 27 of a lower electrode sheet 2 formed by irradiation with a laser beam 4 in a method of manufacturing a high-strength touch panel according to another embodiment of the present invention.
  • FIG. 11 is a partial cross-sectional view showing a cutting line 28 of the lower electrode sheet 2 formed by irradiating a laser beam 4 in a method of manufacturing a high-strength touch panel according to another embodiment of the present invention.
  • 1 is a rectangular upper electrode sheet having a plurality of upper electrodes 1 1 1 and a plurality of lower electrode power supply auxiliary electrodes 2
  • 2 is a rectangular lower electrode sheet having a plurality of lower electrodes 1 2
  • Reference numeral 3 denotes four rectangular openings 3a corresponding to the above four high-strength touch panels, a lower electrode power supply auxiliary electrode 22 of the upper electrode sheet 1, and a rectangular lower electrode 1 2 of the lower electrode sheet 2.
  • 4 is a laser beam
  • 5 is a cutting line formed on the upper electrode sheet 1 by the laser beam 4
  • 6 is a cutter
  • 7 is a groove formed by the cutter 6
  • 8 is a touch panel
  • 9 is a transparent film
  • 10 is a rectangular transparent glass substrate
  • 10a is a compressive stress layer
  • 12 is a hard coat layer
  • 13 is a number of transparent insulating sheets formed on the lower electrode 1 2 1 mono-
  • 1 4 denotes a fusion part, respectively.
  • the rectangular upper electrode sheet 1 is composed of four rectangular transparent conductive films 11a corresponding to four high-strength touch panels on one surface of the flexible transparent film 9. It is provided with a power-supplying auxiliary electrode 11 and a plurality of lower electrodes 11 and a plurality of lower electrodes, and a hard coat layer 12 on the entire other surface.
  • the rectangular lower electrode sheet 2 has four rectangular lower electrodes 12 corresponding to the four high-strength touch panels and corresponding to the upper electrodes 111 on one surface of the rectangular glass substrate 10. It is constituted by having one.
  • Each of the lower electrodes 121 indicates a region necessary for input in the transparent conductive film 21 a formed on the entire surface of the glass substrate 10.
  • Each upper electrode 1 1 1 of the upper electrode sheet 1 and each lower electrode 1 2 1 of the lower electrode sheet 2 were opposed to each other at intervals with a number of dot-shaped spacers 13 therebetween.
  • the perimeter of each upper electrode 1 1 1 of the upper electrode sheet 1 and the perimeter of each lower electrode 1 2 1 of the lower electrode sheet 2 are bonded together with an adhesive sheet 3 so that four resistors Manufactures touch panels of the membrane type.
  • the lower electrode power supply auxiliary electrodes 22 of the upper electrode sheet 1 are connected to the respective through holes 3 b of the adhesive sheet 3.
  • the lower electrode sheet 2 is electrically connected to the respective terminals of the lower electrode 1 2 1 of the lower electrode sheet 2 via a conductive adhesive, and is connected from the lower electrode power supply auxiliary electrode 22 of the upper electrode sheet 1 to the lower electrode sheet 2. Power can be supplied to each of the lower electrodes 1 2.
  • the resistive touch panel manufactured above is placed on a screen such as an LCD (Liquid Crystal Display) or CRT (CRT), and the touch panel is touched with a finger or a pen according to the instructions on the LCD or other screen seen through the touch panel.
  • Upper force The upper electrode 11 of the upper electrode sheet 1 and the lower electrode of the lower electrode sheet 2 that are opposed to each other with a large number of dot-shaped spacers 13 spaced apart by pressing. The position input is performed by contacting 1 2 1.
  • a large number of upper electrodes 111 are taken, for example, in Fig. 1, a large rectangular upper electrode sheet 1 and four lower electrodes 122 are taken in large numbers. For example, in Fig. 1, four large electrodes are taken.
  • each of the upper electrodes 1 1 1 of the upper electrode sheet 1 and each of the lower electrodes 1 2 1 of the lower electrode sheet 2 pass through a number of dot-shaped spacers 13.
  • the auxiliary electrodes 22 for supplying power to the lower electrodes of the upper electrode sheet 1 are electrically connected to each other through the conductive adhesive in the through holes 3 b of the adhesive sheet 3. It is electrically connected to each end of the lower electrode 121 of the electrode sheet 2.
  • the upper electrode sheet 1 is cut into individual upper electrodes 11 by irradiating the laser beam 4 from the upper electrode sheet 1 side along the predetermined cutting line 30 shown in FIG. 2 (see FIG. 2). (See Figure 3).
  • An alignment mark is formed on the glass substrate 10 in advance by printing or the like, the alignment mark is optically read by a recognition camera, coordinates are determined based on the read alignment mark, and coordinates are determined.
  • the planned cutting line 30 to be cut is determined, and the irradiation nozzle 40 for irradiating the laser beam 4 is moved along the planned cutting line 30.
  • a groove 7 is provided for each lower electrode 121 on the glass substrate 10 of the lower electrode sheet 2 (see FIG. 5).
  • the alignment mark on the glass substrate 10 is read from the lower electrode sheet 2 side, and the read alignment mark is used as a reference.
  • the cut line 31 is determined so as to match the position of the cut planned line 30 at the coordinates, and the cutter 6 is cut in along the cut line.
  • the groove 7 is formed. By doing so, the groove 7 can be positioned within the width of the cutting line where the upper electrode sheet 1 is cut by the irradiation of the laser beam 4. At this time, the groove 7 is not limited to a continuous straight line, and may be a dotted line as long as the glass substrate 10 can be divided.
  • the glass substrate 10 is manually divided along the groove 7 of the glass substrate 10 into two pieces along the longitudinal direction, for example, and then divided into two pieces in the short direction, thereby obtaining four pieces. (See FIG. 6) to obtain individual touch panels 8 (see FIG. 7).
  • Each of the touch panels 8 thus obtained is irradiated with the laser beam 4 on the upper electrode sheet 1 so that the transparent film 9 and the hard coat layer 12 constituting the upper electrode sheet 1 have four sides.
  • the end portions are fused to form a fused portion 14, and the surface portions of the four side end surfaces of the glass substrate 10 on the extension of the fused portion 14 serve as a compressive stress layer 10 a. (See Figure 8).
  • the transparent film 9 of the upper electrode sheet engineering plastics such as polycarbonate, polyamide, polyolefin, and polyetherketone, and transparent films such as acrylic, polyethylene terephthalate, and polybutylene terephthalate are used. .
  • the transparent film 9 is not limited to a single film, but may be a laminate in which a plurality of films are stacked.
  • a soda-glass plate, a borosilicate glass plate, or the like is used as the glass substrate 10 of the lower electrode sheet.
  • a transparent conductive film On the opposing surfaces of the upper electrode sheet 1 and the lower electrode sheet 2, together with the upper electrode 111 and the lower electrode 121, a transparent conductive film, a pair of parallel bus bars, a routing circuit, and the like are formed.
  • a metal oxide film such as tin oxide, indium oxide, antimony oxide, zinc oxide, cadmium oxide, or indium tin oxide (ITO), a composite film mainly containing these metal oxides, or Gold such as gold, silver, copper, tin, nickel, aluminum, or palladium
  • the transparent conductive film may be formed in multiple layers.
  • a conductive paste such as a metal such as gold, silver, copper, or nickel, or carbon is used.
  • the routing circuit is often provided collectively on one of the upper electrode sheet 1 and the lower electrode sheet 2.
  • the transparent conductive film 11a of the upper electrode sheet 1 is formed only between the bus bars 11b, and is routed to the portion of the upper electrode sheet 1 where the transparent conductive film 11a is not formed.
  • the circuits 11c are provided together, and the busbar 11a provided on the upper electrode sheet 1 is directly connected to the routing circuit 11c on the same sheet, and the busbar 2 1 provided on the lower electrode sheet 2 is provided.
  • the routing circuit is not limited to this, and conversely, it may be provided collectively on the lower electrode sheet 2 or provided on the upper electrode sheet 1 and the lower electrode sheet 2 respectively. Is also good.
  • the hard coat 12 formed on the surface of the transparent film 9 opposite to the surface on which the upper electrode 11 is provided may be an acrylic epoxy-based, urethane-based thermosetting resin, or an acrylate-based photocurable resin. There are organic materials. Further, the hard coat layer 12 may be subjected to a non-glare treatment in which light is irregularly reflected on the roughened uneven surface by roughening the surface of the hard coat film with fine particles. For example, the surface of the hard coat layer 12 is processed to be uneven, or the hard coat layer 12 is mixed with particles such as extender pigment, silica, or alumina.
  • Spacer 1 3 is formed on the upper electrode sheet 1 or any one of the transparent conductive film 1 1 a of the lower electrode sheet 2 or 2 1 a surface.
  • the spacer 13 is formed on the surface of the transparent conductive film 21 a of the lower electrode sheet 2.
  • Examples of spacers 13 include acrylate resins such as melamine acrylate resin, urethane acrylate resin, epoxy acrylate resin, methacryl acrylate resin, or acryl acrylate resin, or Transparent light-curing resin such as polyvinyl alcohol resin is converted into fine dots by photo process. It can be obtained by forming.
  • the spacer 13 can be formed by forming a large number of fine dots by a printing method.
  • the adhesive sheet 3 is usually a double-sided adhesive punched out as a rectangular opening 3a and a through-hole 3b at a portion corresponding to a panel visible area and a portion corresponding to a portion of a wiring circuit to which a conductive adhesive is applied, respectively.
  • a sheet is usually a double-sided adhesive punched out as a rectangular opening 3a and a through-hole 3b at a portion corresponding to a panel visible area and a portion corresponding to a portion of a wiring circuit to which a conductive adhesive is applied, respectively.
  • an adhesive for example, an aqueous or acrylic printing paste may be used.
  • the width of the laser beam 4 in other words, the irradiation spot diameter is fixed at the irradiation surface on the upper electrode sheet 1 and the irradiation nozzle 40 is linearly cut.
  • the upper electrode sheet 1 in the portion of the laser beam irradiation area where the irradiation spot diameter of the irradiated laser beam 4 is the width dimension and the movement dimension of the irradiation nozzle 40 is the length dimension is burned off.
  • the width of the laser beam 4 can be controlled by focusing the laser beam 4 with a laser beam irradiating lens and narrowing the focal point.
  • the width of the burned-out laser beam irradiation area is set to the cutting line 5 of the upper electrode sheet 1 and the glass substrate 10 of the lower electrode sheet 2 when the groove 7 is provided from the lower electrode sheet 2 side to the glass substrate 10.
  • the dimensions must be such that they can be aligned with the grooves 7 provided (see Figure 5).
  • the width of the laser beam irradiation area is usually in the range of 0.1 to 0.5 mm.
  • the transparent film 9 and the hard coat layer 12 thereon are fused at the cut ends thereof after being fused.
  • the transparent film 9 and the node coat layer 12 that are fused to form the fused portion 14 have strong adhesion at the fused portion 14 (see FIG. 8).
  • the glass substrate 10 by irradiating a laser beam 4 to a portion of the upper electrode sheet 1 to be cut, the glass substrate 10 also has a softening temperature of glass at a portion located below the cutting line 5 of the upper electrode sheet 1 (for example, High temperatures of over 696 ° C for soda-glass and 780 ° C for borosilicate glass (for example, depending on the laser beam power, The temperature rises so high that glass of several thousand degrees will sublime).
  • the heated portion is immediately cooled (for example, in a unit of milliseconds) to room temperature by air cooling when the irradiation of the laser beam 4 is completed, whereby the surface layer on the side end surface is solidified first.
  • a stable compressive stress layer 10a is obtained (see FIG. 8). That is, the glass substrate 10 is partially tempered and has a glass strength against impact of 1.0.
  • a carbon dioxide laser, a YAG laser, or the like can be used, but a carbon dioxide laser is the most superior for improving the glass strength.
  • the manufacturing method of the touch panel fused at 14 and having the surface layer portions of the four side end faces of the glass substrate 10 as the compressive stress layers 10a is not limited to the above-described method.
  • the upper electrode sheet 1 is cut for each upper electrode 11 and simultaneously the laser
  • a groove 27 is also provided for each lower electrode 121 on the glass substrate 10 of the lower electrode sheet 2 thereunder (see FIG. 9), and finally, along the grooves 7 on both sides of the glass substrate 10 Alternatively, the individual touch panels 8 may be obtained by dividing the touch panel.
  • the power of one laser beam is controlled.
  • the glass substrate 10 is also irradiated with the single laser beam 4, so that the glass strength is further improved.
  • the groove 27 or the groove 7 is not limited to a continuous straight line, but may be a dotted line as long as the glass substrate 10 can be divided.
  • the upper electrode sheet 1 is cut by the laser beam 4 instead of the cutter from the upper electrode sheet side, and the glass sheet 10 of the lower electrode sheet 2 thereunder is cut.
  • the groove 27 is also provided, the sharpness on the glass substrate surface is not deteriorated like a cutter, and microcracks do not occur in the groove 27.
  • the depth of the groove 27 provided in the glass substrate 10 of the lower electrode sheet 2 by irradiating the laser beam 4 is sufficient if it is about 10% of the thickness of the glass substrate 10. It is preferably within the range.
  • the glass substrate 10 provided by irradiating the laser beam 4 can be used.
  • the groove 27 deeper, for example, by at least 10% of the thickness of the glass substrate 10, it is sufficient even if a cut is not made using the cutter 6 from the lower electrode sheet 2 side (see FIG. 10).
  • Can be divided into By setting the depth of the groove 27 by the irradiation of the laser beam 4 to be 10% or more of the thickness of the glass substrate 10, the glass substrate 10 can be surely divided.
  • the groove 27 formed by the irradiation of the laser beam 4 is formed as a continuous straight line.
  • the upper electrode sheet 1 is cut into individual upper electrodes 11 by irradiating a laser beam 4 from the upper electrode sheet 1 side, and the glass substrate of the lower electrode sheet 2 thereunder. Since only grooves 27 are provided for each lower electrode 12 on 10, there is no need to align the cutting line 5 of the upper electrode sheet 1 with the groove provided on the glass substrate 10 of the lower electrode sheet 2.
  • the upper electrode sheet 1 is cut for each upper electrode 111, and the lower electrode sheet 2 thereunder is completely cut for each lower electrode 121 at the cutting line 28 (see Fig. 11). You may be able to get a touch panel 8. In the case of the embodiment of FIG. 11, even the work of dividing the touch panel 8 into individual touch panels 8 is unnecessary.
  • the upper electrodes 1 1 1 and 1 1 are formed on the transparent substrate 1 a based on the pattern, while the lower electrodes 1 2 1 are formed on the glass substrate 1 1.
  • 0 is a region necessary for input in the transparent conductive film 21a formed on the entire surface of the lower electrode 12.
  • the lower electrode 1 21 is formed with a transparent conductive film 21a based on a pattern.
  • Each of the upper electrodes 111 may be a region required for input in the transparent conductive film 11 a formed on the entire surface of the upper electrode sheet 1.
  • each of the above upper electrodes 11 1 and each of the lower electrodes 1 21 are based on a pattern, and the transparent conductive films 1 1 a,
  • the adhesive sheet 3 as an example of the adhesive layer is formed of a double-sided adhesive sheet punched out of each rectangular opening 3a, but the adhesive layer is not limited to this.
  • a transparent conductive film is formed on each of the upper electrode 1 11 and the lower electrode 1 2 1 based on a pattern, it is not necessary to specify a region required for input by the rectangular opening 3 a. Therefore, a band-shaped adhesive member which is independent and does not have the rectangular opening 3a and the through hole 3b may be arranged on the periphery of each high-strength touch panel to form an adhesive layer.
  • the thickness of the upper electrode sheet 1 is 75 to 300 m, and the thickness of the lower electrode sheet 2 is 0.55 to 2.5 mm.
  • the high-strength touch panel and the method for manufacturing the same according to the present invention have the following configurations and functions, and therefore have the following effects.
  • the four side end faces of the rectangular glass substrate of the touch panel which are cut or divided afterwards, rapidly rise to a high temperature by irradiating one laser beam, and are quickly cooled to room temperature instantly by the end of one laser beam irradiation. Therefore, the surface layer becomes a compressive stress layer. Therefore, the obtained touch panel has a glass substrate in which each side end surface of the glass substrate is strengthened and vitrified, and has excellent glass strength.
  • the portion of the upper electrode sheet to be cut is burned off by laser single beam irradiation, and the transparent film and the hard coat layer thereon are fused at each of the four cut ends to form a fused portion. Has formed. Therefore, the obtained touch panel has excellent adhesion of the hard coat layer.
  • the upper electrode sheet can be burned off by irradiating a single beam of laser with a wider width than the width of the groove cut by the cutter, Alternatively, it is possible to burn off the upper electrode sheet and the lower electrode sheet by irradiating a laser beam.
  • the glass substrate of the lower electrode sheet is formed along the cutting line of the wide upper electrode sheet and within the width in the manufacturing process.
  • the grooves provided in the upper electrode sheet may be arranged, and the alignment between the cutting lines of the upper electrode sheet and the grooves provided in the glass substrate of the lower electrode sheet is simple or unnecessary.

Abstract

La présente invention concerne un écran tactile (8) à film résistif comportant deux feuillets électrode (1, 2). Le feuillet électrode supérieur (1) est constitué, d'un film souple transparent (9) pourvu, sur une face, d'une électrode supérieure (111) et, sur l'autre face, d'une couche de revêtement dure (12). Le feuillet électrode inférieur (2) est constitué d'un substrat de verre (10) dont une face est pourvue d'une électrode inférieure (121) tournée vers l'électrode supérieure. Les deux feuillets (1, 2) sont séparés l'un de l'autre par un intercalaire (13) disposé entre les électrodes supérieure et inférieure. En outre, les électrodes supérieure et inférieure sont reliées au niveau de leurs pourtours par une couche d'adhésif (3). Le film transparent et la couche de revêtement dur sont fusionnés dans leurs zones de bordure. De plus, une partie superficielle de la face des bords latéraux du substrat de verre est une couche à contrainte compressive (10a).
PCT/JP1998/004558 1997-10-09 1998-10-09 Ecran tactile haute resistance et procede de fabrication WO1999019893A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US09/529,060 US6380497B1 (en) 1997-10-09 1998-10-09 High strength touch panel and method of manufacturing the same
KR10-2000-7003761A KR100519465B1 (ko) 1997-10-09 1998-10-09 고강도 터치패널과 그 제조방법
EP98947797A EP1030333B1 (fr) 1997-10-09 1998-10-09 Ecran tactile haute resistance et procede de fabrication
DE69833957T DE69833957T8 (de) 1997-10-09 1998-10-09 Hochfeste berührungstafel und deren herstellungsverfahren

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP29327897 1997-10-09
JP9/293278 1997-10-09

Publications (1)

Publication Number Publication Date
WO1999019893A1 true WO1999019893A1 (fr) 1999-04-22

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US (1) US6380497B1 (fr)
EP (1) EP1030333B1 (fr)
KR (1) KR100519465B1 (fr)
DE (1) DE69833957T8 (fr)
TW (1) TW388894B (fr)
WO (1) WO1999019893A1 (fr)

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US6380497B1 (en) 2002-04-30
DE69833957T8 (de) 2007-05-16
KR100519465B1 (ko) 2005-10-07
EP1030333A4 (fr) 2002-08-07
TW388894B (en) 2000-05-01
EP1030333A1 (fr) 2000-08-23
DE69833957T2 (de) 2006-12-14
DE69833957D1 (de) 2006-05-11
KR20010024454A (ko) 2001-03-26
EP1030333B1 (fr) 2006-03-22

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